Electric-arc light.



PATENTED JULY 7, 1903..

I. BUCHANAN. ELECTRIC ARC LIGHT.

APPLICATION rum) JAN. 2, 1903.

2 SHEETS-SHEET 2.

WM" zone and the support therefor.

UNITED STATES iatented. Jul 7, 190a.

FRANK BUCHANAN, OF DAYTON, OHIO.

ELECTRIC-ARC LIGHT.

SPECIFICATION forming part of Letters Patent No. 733,135, dated'J 11137, Application filed January 2, 1993. Serial No. 137,549. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRANK BUCHANAN, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented new and useful Improvements in Arc-Lights, of which the fol-'lowing is a specification.

My invention relates to electric-arc lights, and has for its object toconstruct a simple and efficient carbon-feed mechanism.

The novel construction employed by me in.

carrying out my invention is fully described and claimed in thisspecification and illustrated in the accompanying drawings, forming apart thereof, in which Figure 1 is a vertical section of a headlightcontaining my improved light. Fig. 2 is a perspective of the carbon-feedmechanism Fig. 3 is a detail transverse section of the floating clutch.Fig. 4 is a detail perspective of the upper-carbon holder. Fig. 5 is aplan view of the floating clutch. Fig. 6 is a detail of the lower-carbonclamp. Fig. 7 is a detail perspective of a modified form ofelectromagnet.

Like numerals of reference designate like parts in the different viewsof the drawings.

The numeral 1 designates a base which supportsa standard 2. A splitbearing 3 is formed in the head of the standard 2 to accommodate a stud4, formed on a member 5, having oppositely-extending arms 6 and 7. Ascrew 8, fitted in the head, serves to force the two jaws 3 and 3 of thebearing 3 together and clamp the stud 4 against all movement, butpermits angular adjustment of the member 5 in a vertical plane to adjustthe angle of inclination of the carbons.

The upper arm 6 supports a solenoid 9, adjustably mounted in a yoke 10,having unequal arms 11 and 11 and a cross-bar 12,

hearing a lug 12, which extends into the so-- lenoid 9. A core 13 isslidingly mounted in the solenoid 9, and the outer end is pivoted to anarmature 14, which forms one arm of an elbow-lever 15, fulcrumed on afixed pin 16. The arms 11 and 11 limit the upward swing of the armature,whichisinclined backwardly to enable it to drop by gravity when releasedby the solenoid. The other arm 17 ried by an arm 24, rigidly secured tothe arm 6 of the member 5. The holder 23iscutaway' at 25 on both sidesto accommodate the clutch 20 and has a collar 26 formed thereon, whichserves as a stop to limit the downward movement of the clutch 20 andalso as a support.

A pin 27, supported by the collar 26 and an ear 28, is surrounded by aspring 29, which bears on the clutch 20 and holds the free end incontact with the collar 26.

A lower carbon 30 is located in alinement with the carbon 22 and ismounted in a holder 31, supported by the arm 7. The carbon 30 isyieldingly held against movement by a knurled roller 32, journaled in abracket 33, bearing a stem 34, slidingly mounted in an aperturedcross-bar of a yoke 36. A spring 35 surrounds the stem 34 and bears onthe bracket 33, thereby holding the roller 32 in engagement with thelower carbon 30. The ends of the shaft 32, on which the roller 32 issecured, extend through slots 36 in the side bars of the yoke 36, andmounted on one end of this shaft is a thumb-nut 37 for turning theroller 32 to feedthe lower carbon.

By this device the carbon 30 is yieldingly held and all danger ofslipping avoided.

A conductor 40 is connected to one end of the windings of the solenoid 9and with some source of electricity. A conductor 41 is connected to theopposite end of the windings on the solenoid 9 and to the conducting-arm24, which is insulated from the arm 6. The lower-carbon holder 31 isinsulated from the arm 7 and isoonnected to the before-mentioned sourceof electricity by means of a conductor 42. A circuit would therefore becompleted through the carbons when in contact, which would trace asfollows: source of electricity, conductor 40, winding on solenoid 9,conductor 41, arm 24, carbon-holder 23, upper carbon 22, lower carbon30, carbonholder 31, and through conductor 42 back to the source.

Suppose the circuit above traced has been established. The solenoid willthen become magnetized, which will cause it to attract its core 13 andarmature 14, thereby operating the elbow-lever 15 and lifting the clutch20, which will assume the position shown in dotted lines and grip thecarbon 22, thereby drawing it up and separating it from the lower carbon30. As soon as this separation has been effected an arc will beestablished between the carbons, which will persist until the burningoff of the upper carbon 22 increases the interval between the carbonssufficient to break the arc and circuit. The breaking of the circuitwill cause the solenoid 9 to release its core 13 and armature 14,thereby operating the clutch 20, which will in turn release the carbon22 and permit it to slide down in contact with the lower carbon 30 andreestablish the circuit, after which the cycle of operation will berepeated.

In the modified form illustrated in 7 a solenoid 43 is employed which isset vertical and is provided with conducting-heads 44 and 45. The lowerhead 44 has an arm 44* formed thereon, which extends adjacent to thearmature 14:, and the upper head 45 bears an arm 45", having a notch 45therein, which serves to engage and limit the swing of the upper end ofthe armature 14:. When the circuit is completed through the solenoid-43, it operates in substantially the same manner as the preferred form,as will be readily understood by those skilled in the art.

I do not wish to be limited as to details of construction, as these maybe modified in many particulars without departing from the spirit of myinvention.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. In a carbon-feed mechanism, the combination of a casing, a solenoidmounted in said casing, an elbow-lever fulcrumed on said casing, one armof said lever bearing an armature for said solenoid, a core pivoted tosaid armature and extending into said solenoid, a clutch member, and alink connecting said clutch member and said elbow-lever, substantiallyas described.

2. In a carbon-feed mechanism, the combi-- nation of a yoke-shapedcasing, a solenoid mounted in said casing, an elbow-lever fulcruined ona support carried by said yokeshaped member, one arm of said leverserving as an armature for said solenoid, a carbon-holder carried bysaid support, a clutch member mounted to engage a carbon fitting saidholder, and a link connecting said clutch to the other arm of saidelbow-lever, substantially as described.

3. In a carbon-feed mechanism, the combi-' nation of a yoke-shapedmember bearing an elongated lug, a solenoid mounted in said yoke withsaid lug forming core therefor, a core slidingly mounted in saidsolenoid, an elbow-lever supported by said yoke, one arm of whichcarries an armature for said solen oid, located to come in contact withthe arms of said yoke, said armature being pivoted to said sliding'core,a clutch, and a link connecting said lever and said clutch,substantially as described.

4. In a carbon-feed mechanism, the combination of a holder for the uppercarbon comprising a tube cut away on its opposite sides to formapertures and bearing a collar located just below the apertures formedtherein, a floating clutch mounted on said collar and constructed toengage the projecting sides of a carbon mounted in said holder, andmeans for operating said clutch to feed the carbon mounted in saidholder, substantially as described.

5. In acarbon-feed mechanism, the combi- .nation of a tubularcarbon-holder having opposed apertures therein and bearing a collarlocated below said apertures,anotched clutch member resting on saidcollar and set to engage thesidesof the carbon projecting through saidapertures, a spring bearing on one end of said clutch, a solenoidprovided with a pivoted armature, and means connecting said armatureandthe opposite end of said clutch to operate it to feed said carbon,substantially as described.

6. In a carbon-feed mechanism, a yoke, a bracket bearing a knurledroller journaled therein and a stem slidingly mounted in the cross-barof said yoke, a spring surrounding said stem and bearing on said bracketand said yoke, and a thumb-nut fitted on one of the spindles of saidroller, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRANK BUCHANAN. Witnesses:

A. O. BUCHANAN,

WM. A. BUDROE.

